Dual brake valves

Details Dual brake valves Dual brake valves

1984-11-28

1986-09-02

Reger, Duane A.

Fluid-pressure and analogous brake systems

Motorman's valves

Multiple motors

303 40, B60T 1504

Patent

active

046092307

ABSTRACT:
A dual brake valve assembly including two co-axial primary and secondary valves for primary and secondary braking circuits is modified to include an auxiliary exhaust valve operable in conjunction with the pressure plate and a secondary piston for controlling operation of the secondary valve in response to operation of the primary valve. When the valve assembly is operated to apply the brakes, the auxiliary exhaust valve remains closed to prevent the premature release of fluid from the primary circuit irrespective of uncontrolled relative movement between parts of the valve assembly.

REFERENCES:
patent: 3291539 (1966-12-01), Buelen
patent: 3992065 (1976-11-01), Pekrul
patent: 4010983 (1977-03-01), Coupland

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